Dust-collector.



PATENTED APRQ'ZI, 190a.

C. P. VERRELL. DUST CULLEOTOR APPLICATION FILED APR. 8, 1901.

2 SHEETSSHEET i.

INVENFOR M-H/M A TORNEY.

M/(TNESSES:

PATENTED AP 21,1903.

' o; F. VBRRBLL. DUST COLLECTOR. AEPLI OATION FILED APR. 8,1907.

2 SHEETS-SHEET 2.

WITNESSES.-

INVENTOP. am

I UNITED STATES PAT i .GHARLES r. VERRELL, or GRAND RAPIDS, MICHIGAN.

DUST-COLLECTOR.

To all whom it may concern;

Be it known that 1, CHARLES F. VERRELL, a citizen of the United States, residing at Grand Rapids, in the county of Kent and" State of Michi an, have invented a new and useful Dust-Co lector, of which the following tion of dust from the air is effected eifieiefi tlv and economically; second, to provide a de-' vice whereby the air-pressure in the dustoutlet of the collector, irrespective of the fan pressure, can be varied at will and regulated to suit var ing conditions; third, to provide a device w ierebv the fine residual dust, that tends to escape by way of the air-outlet, can be collected and eflected again into the separating-chamber fourth, to provide a device whereby the rotary or whirling air within the air-chamber of the collector will be deflected inwardly arid outwardly through the dustoutlet through its own momentum and fifth, to provide a device whereby the intake of air inwardly through the air-outlet will be prevented.

V. by the devices arid means described in the Further obiects will definitely appear from the detai ed description to follow;

I accomplish the objects of my invention following specification.

The invention .is clearly defined and pointed out in the claims.

A structure embodying the features-of my invention is illustrated in the accompanying drawings, forming a part of this specification,

Figure 1 is a vertical section ofu'riyinv proved dust-collector taken on line 3/ y of Fig. 2. Fig. 2 1s a transverse section taken on line a: a; of Fig. 1, looking in the direction otthe little arrow at theend of sa d line.

Specification of Letters Patent.

Application filed April 8, 1907. Serial No. $6,929.

Patented April 21, 1908.

shown, my dust-collector consists of an upper truncated conical-shaped air-chamber and a lower cylindrical separating-chainber, and so arranged that the two parts may be bolted. or secured together. Entering the separatingchamber at a tangent through the casing 2 is the air and dust inlet 3, while in the base 2, and concentric with its periphery is the dustoutlet 4 adapted to be connected to furnacefeeder pipes (not shown in the drawings), if

so desired. 'lnthe top .1 of the air-chamber and concentric with its peripl'lery is the air .outlet 5.

Within the soparating-chamber, and se cured to the base 2, is the vertical deflectorwall 9. The outer end of this deflector-wall 9 is closely secured to the casing 2 at the point 17 (which is about 90, from the inlet 3), its upper edge being slightly above or in the plane of thcupper part of the said inlet. From the point where it is thus secured to the casing 2, the deflector wall curves spirally a'nd'inwardly, the upper edge at the same time curving downwardly from the point of contact with the casing-Wall to the periphery of the dust-outlet 4, until the deflector-wall becomes tangent to the periphery of the outlet 4 at the point 16. At right angles to this deflector-wall, and projecting slightly over it so as to form an inwardlyprojecting cap 7, is the cover 8 com letely covering the space between the deflector- Wall 9 and the casing 2. hen the dustladen air enters the inlet 3 it follows the casing 2 until it is deflected by the deflector-- wall 9 and the projection 7 downwardly and inwardly towards the outlet 4. The pro ject'ion 7 tends to confine the dust to the dc Hector-wall and from following the path of least resistance, which is upwards.

In many (.lust-collecting systems, it is oftcii desirable to Vary the air-pressure in the furnace-feeder pipes without bstrur.:ting the stream of dust or other material discharged thcrethrough. To meet this requirement, 1 provide a regulator 10 just above the cover 8, atthc point where the delle rtor-wall 9 joinsthe outlet 4. This regulator ll) is provided with a fran'ie .ll and ,.l2, which slides within suitable guides so thilt the regulator can wholly or partially cover the outlet 4. The frame 1] arranged to u-ojeet through the side of the casing 2 and orm. the handle and downwardly toward the outlet 4, the dust and other material will be carried by its momentum out through the outlet into the furnace-feeder pipes while the greater part ofv the air will escape upward into the airchamben. Bysliding the regulator out over the outlet a greater amount of air can be defiected through the outlet alongwith the dust and other material, thus increasing the air-pressure not only in the dust-outlet but also in the furnace-feeder pipes. Itis thus possible to regulate the air-pressure without obstructing t e stream of material carried by the air through the outlet.

' In the air-chamber of my dust-collector is the deflectorwall 13, consisting of a sheet of metal of considerable width secured along its up er edge to the top 1 of the chamber. The eflector-wall' is so arranged that its upper edge will form a spiral, its outer end beingncontiguous tothe periphery of'the top 1-, W 1c the inner end Wlll be tangent to the peri hery of the outlet 5. The lower edge of t e deflector-wall also forms a spiral, but smaller than that formed by the up er edge, its inner end being coincident with t e longitudinal axis of the air-chamber. If this lower edge be projected, it will be found that the curve so traced will be parallel to the tion of an inverted frustum of a cone.

curve of the upper edge. As the deflector-' wall curves spirally through substantially 360, it will have outwardly the COIlfigtlfige lower edge ,of this deflector-wall 13 is suported and kept in lace by the brace 14. n consequenceof t e spiral form of this deflector-wall, there is formed an opening 6 between the parallel ed as 13and 13 of the deflector-wall. As t e air comes up from the separating-chamber, it has'a rotary or whirling motion, with a tendency to follow around Within the casing-wall 1 and to collect in the u per peripheral corners of the air-chamber 'orming an eddy having considerable pressure. The function of this deflector-wall is to deflect and chan c this rotary motion having approximate y the diameter of the air-chamber to a rotary motion of smaller diameter, so that it will be deflected inwardly and its own momentum will carry it outwardly through the air-outlet. Furthermore, I have found that without this deflector-wall there was a flow or in-take of air in through the air-outlet at its center, while the air within was passing out throu h the outlet at its periphery. By the use 0 this deflector-wall this in-take of air is prevented.

In case the air forced into the collector through the inlet 3 carries fine dust, which has a'tendenc to escape with the air through theoutlet 5, provide an inwardly-projecting flan e or guide 18 secured to the inside of the de ector-wall 13. 'ihis flange 18 runs from the upper end of edge 13 spirally and downwardly to the lower end of edge 13'.

it reaches the deflector-wall 9'1t is deflected inwardly and downwardly towards the dustoutlet 4. By manipulating the regulator 10, the pressure in the dust-outlet can be so varied as to get any required volume of air through said dust-outlet along with the ma terial discharged.

By reason of the whirlin motion of the air within the separating-chamber, there is formed a vortex, the axis of which substantially coincides with that of the separatingchamber. As the air rises, or is forced, from the separating-chamber to the air-chamber, it still retains its whirling or vertical motion, the mass of air following the casing-wall 1 of the chamber until deflected by the deflectorwall 13. It has been found that, while whirling within the air-chamber, the particles of air will act substantially as the particles of dust in the separating-chan'iber, and the deflector-wall 13 will prevent the air from whirling bodily in a mass around and within the casing-wall. As the air strikes this defiector-wall 13, its momentum will carry it out through the air-outlet 5. If there should be any fine residual dust carried by this air, it will be caught and guided dovmward by the flange 18, whence it will be carried by its own momentum and gravity into the separating-chamber below. It is not necessary in all casesfhowever, to have such a flange.

I have illustrated and described my im roved dust-collector in the form .reierred y me. I am, however, aware tiat it is capable of considerable variation instrum tural details and form, withou t departing from my invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is:

1. In a dust-collector, the combination of a separating-chamber having a peripheral I tangential inlet and a dust-outlet concentric with the periphery of said chamber; a vcrtical deflector-wall in said. chamber, having one end secured to the casing of said chamber and then curving spirally until the inner end becomes tangent to the dust-outlet, the up per edge of said deflector-wall curving dmvn-v' wardly from the point of contact with the casing-wall towards the periphery of the outlet; a cover between said de ector-wall and the casing of said chamber and projecting inwzardly beyond said deflector-wall; and a regulator arranged to slide over said Hector-wall and the casing of said chamber and projecting inwardly beyond said deflector-wall; and a regulator arranged to slide over said dust-outlet;.,substantially as described.

3. In a dust-collector, the combination of aseparating-chamber having an inlet and a dust-outlet; a" curved deflecting-member, having an inwardly-projecting o'ap along its upper edge, in said chamber to guide the dust inwardly and downwardly t0 the said dust-outlet; and a regulator arranged to cooperate with said dust-outlet whereby the air-pressurc in said dust-outlet can be varied at will without obstructing the stream of material discharged.

4. In a dust-collector, the combination of an air-chamber having an air-outlet concentric. with the periphery of the top of said chamber;' an inverted-conical spirally-arranged deflector-wall in said chamber secured along its upper edge tothe top of said chamber, one end of its upper edge being contiguous to the periphery of the top ofsaid chamber, the other end being tangent to the peripl'iery ol the air-outlet, and an inwardly, projecting flange on the inside of said defloater-wall, the said flange running spirally from the upper outer edgeto the inner lower edge of said deilectcnwall; substantially as described.

5. In a dust-collector, the combination of an air-'clmmber having an air-outlet concentric with the pe'rhvhery of the top of said chamber; and an inverted-conical spirallyarranged deflector-wall in said chamber scwu ed along its upper edge to the top of said chamber, one end of its upper edge being contiguous to the periphery oi the top of said chamber, the other end being tangent to the periphery of the air-outlet; substantially as described. i

6. In the ai-r-cbtunber of a dust-collector and provided with an air-outlet in top of said cl'mmber, means for dellectin the air inwardlyand outwardly through said outlet, said n'ienns consistii'i of aninverted-conical spirallyarranged, reflector-wall secured along lts upper edge to the top of said chamher, one cm, of its upper edge being eontiguone to the periphery of the top of said chainher, the other end being tangent to the pe riphery of the outlet.

7, In a dust-collector, the combination of a separating-chamber having an inlet and a dust-outlet; a curved deflectingmember, having an inwardly-projecting ca along its upper edge, in said separating-chamber to guide. the dust inwardly and outwardly through said dust-outlet; a regulator arranged to slide over said dust-outlet; arr-air" chamber having an air-outlet; a spirall ar ranged deflecting-member in said air-c amher for deflecting the air inwardly and outwardly through the said air-outlet; and an inward] -projecting flange on the inside of the de ecting-member insaid air-ohamber,

said flange running spirally from thenpper outer end to the lower inner end of said member.

8. In a dust-collector, the combination of a separating-chamber having an inlet and a dust-outlet; a curved deflecting-member, having an inwardly-projecting ca along its upper edge, in said separatingc amber to guide the dust inwardly and outwardly through said dust-outlet; regulator arranged to cooperate with said dustoutlet whereby the air-pressure in said outlet can be varied at will without obstructing the stream of material discharged; an air-ohamber having an air-outlet; and a spirally-arranged deflecting member in said air-chamber for d fleeting the air inwardly and mltward y through the said air-outlet.

9. In a dustcollector, the combination of a separating-chamber having an inlet for the dust-h den air and a dust-outlet; an airchainber having an air-outlet; means in said separating-chamber for deflecting the dust inwardly and outwardly through said dustoutlet; a regulator arranged to cooperate with said dust-outlet whereby the airpres sure in said outlet can be varied at will without obstructing the stream of material dis- -charged; and means in said air-chamber for deflecting the air inwardly and outwardly through said air-outlet.

10. In a dust-collector, the combination of a separating-chamber having an inlet and a dust-outlet; a curved deflecting-member, having an inwardly-projecting cap along its ipper edge, in separating-chamber to guide the dust-inwardly and outwardly throughv said dust-outlet;- an air-chamber having an air-outlet; and a spirally-arranged deliecting member in said ainchamber, se-

cured along its upper edge to the top of said chamber, for deflecting the air inwardly and outwardlythrough the said air-outlet.

11. In a dustcolleetor, the combination of a Separating-cl1an1ber having an inlet and a dust-outlet; acurveddeflecting-member,

having an inwardly projecting ea along its upper edge, in said separating-one]uher to guide the dust inwardly and outwardly through said dust-0utlet; an air-eharnber having an air-outlet; a spirally-arranged deflecting-meinber in said air-chaniber for defleeting the air inwardly and outwardly through said air-outlet; and an inwardly .pro jeeting flange 'on the inside of the defieeting' member in said air-chamber, said flange run.-

'ning spirally from the upper outer end to the lower inner end of said chamber.

12. In a dust-collector, the combination of a separating-chamber, having an inlet and a dust-outlet; a curved dreflecting-member in said separating-chamber to guide the dust inwardly andoutwardly through said dustoutlet; an airehaniber having an air-outlet; a spirally-arranged deflecting-member in said air-chamber for deflecting the air in wardly and outwardly through-the said airoutlet; and an inwardly projecting flange on the inside of the deflecting-member in said airc-haniber,' said flange. running spirally from the upper outer end to the lower inner end of said member. 1

13. In a dust-collector, the combination of a separating-chamber having an inlet and a dust-outlet; means in said separating-elui1nher for deflecting the dust inwardly and outwardly through said dust-outlet a regulator adapted to control theair-pressure in said dust-outlet without obstructing the flow of material discharged therethrough, said regulator being arranged outside of and adjacent to said outlet an air-'ehainber having an airoutlet and means in said air-chamber for deflecting the air inwardly and outwardly through said air-outlet.

14. In a dust-collector having an inlet, a dust-outlet and an air-outlet, the combination of a eurved deflecting member for deflecting the dust and other material inwardly and outwardly through said dust-outlet; a regulator adapted to control the air-pressure in said dust-outlet without obstructing the flow of material discharged therethrougl'n said regulator being arranged adjacent to said outlet; and a spirally arranged deflecting-nien'iber for defleeting thepurified air at ssaaoe inwardly and outwardly through said. airoutlet.

15. In dust-collector having an inlet, a dust-outlet and an air-outlet, means for doi'leeting the dust inwardly and outwardly through said dust-outlet, and means for do fleeting the purified air inwardly and outwardly through said air-outlet, said latter means consisting of an iiivorted-conical spirally-arranged deflector-mill secured along its up er edge to the top of said chamber, one end 0 2 its upper edge being contiguous to the periphery of the top of the dust-collector, the other end being mnliguous to the periphcry of the air-outlet '16. in a dust-eolleetor, the combination of a separating-r-hainher having an inlet and a dust-outlet; means in said separating-chamber for deflecting the dust inwardly and outwardly through said dust-outlet; a regulator adapted to control the air-pressure'in said dust-outlet without obstructing the llow of material discharged therethrmigh; an air ,chainber having an air-outlet; and a spirally-arranged delleeting-niember in said airchamber for (lelleeiing the ai r inwardly and outwardly through said air-outlet and for preventing the intake or air through. said Outlet.

177 in a dlist-collector, the combination of a separaling-rhznnher having an inlet and a (hast-outlet; means in said separating-ehaniher for deflecting the dust inwardly and outwardly through said dust-ouilet; a regulator adapted to (control the air-pressure in said dnst-oullet wit .oui; obstructing the flow of material diseharged therethrough; an. airehainber having an air-outlet; and means in said air-chamber for deflecting the air inwardly and outwardly through said air-outlet and for preventing the intake of air through said out lv ll iinesses W. hlrxnensox, lt. lli. lnvrnuoih t 

